Coordinate input instrument



FIG. 1 is a top-front-right perspective view of a representative embodiment of a coordinate input instrument according to my new design;

FIG. 2 is a bottom-rear-left perspective view thereof;

FIG. 3 is a right side elevational view thereof, wherein the left side elevational view is a mirror image of the right side elevational view;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a rear elevational view thereof; and,

FIG. 8 is a partial top-front-right perspective view thereof, as indicated in by the view indicator shown in FIG. 1.

The dot-dot-dash broken lines in the drawings indicate from where the enlarged views are taken and form no part of the claimed design. 

CLAIM The ornamental design for a coordinate input instrument, as shown and described. 